You are outside during the winter with only 4 materials.
Your hunger and thirst doesn't matter here, it's not a survival thing, but rather an invention game. What can you make with just 4 different materials? Here's my idea:
So what do ya got??
Let's see... I have an idea.
1. Throw sticks away beacouse it's obviously a trap.
2. Dig a hole using your pencils.
3. Create coffin from your pencils.
4. Put lot of snow on your hand and rest of body if you want.
5. Overhelm yourself with salt.
6. You body is burning and you're dying in horrible pain. Your wasted body is red and you're covered with salt and tears.
7. Dryed and devastated body fall into the coffin.
DONE.
Yes, I'm horrible person...
1. Make an igloo.
2. Fill it with H2 and O2 using QuanTech's steps 1-3.
3. Set up a small flame on top of the igloo with the small sticks, burning the rest of the H2 made from electrolysis.
4. Use snow outside the igloo to make a mini pitfall.
5. Fill the pitfall with the toxic slurry made from electrolysis of saltwater.
6. Use the pencils as spikes at the base of the pitfall.
7. When somebody falls into the pit, they will destroy part of the igloo, causing the H2 to touch the flame, exploding and killing the unlucky victim in the trap.
I'm a nice person :}
1. Electrolyze water like in 1-3.
2. You have unlimited snow and pencils, so repeat this for milion years.
3. Remove oxygen, beacouse you don't need this trash.
4. Release that hydrogen!
5. Create a supergiant star (about 100 solar mass).
6. Wait milion years.
7. Watch spectacular Pair-instability supernova.
8. You have created every element due to massive fusion.
9. You have every element created.
10. DO EVERYTHING WHAT YOU WANT.
WOAHH...!!! Now everybody will build off of your invention. So now you guys have access to almost all the elements in the periodic table... yey
That's the plan...